Identification of SARS-CoV-2 inhibitors using lung and colonic organoids

Yuling Han1, Xiaohua Duan1,2, Liuliu Yang1

  • 1Department of Surgery, Weill Cornell Medicine, New York, NY, USA.

Nature
|October 29, 2020
PubMed

Insights

Researchers developed human lung and colon organoids to model SARS-CoV-2 infection. These organoids identified FDA-approved drugs, like imatinib, that inhibit viral entry, offering new COVID-19 therapeutic strategies.

Area of Science:

  • Stem cell biology
  • Virology
  • Drug discovery

Background:

  • Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes COVID-19, necessitating better models for studying its biology and developing treatments.
  • Existing models often lack human disease relevance, limiting their utility for drug screening and understanding pathogenesis.

Purpose of the Study:

  • To develop human pluripotent stem cell-derived lung (hPSC-LOs) and colonic organoids (hPSC-COs) as models for SARS-CoV-2 infection.
  • To investigate the permissiveness of these organoids to SARS-CoV-2 and their inflammatory responses.
  • To conduct a high-throughput drug screen using hPSC-LOs to identify potential COVID-19 therapeutics.

Main Methods:

  • Generation of hPSC-LOs and hPSC-COs from human pluripotent stem cells.
  • Infection of organoids with SARS-CoV-2 to assess permissiveness and chemokine induction.
  • High-throughput screening of FDA-approved drugs using hPSC-LOs.
  • Validation of drug efficacy in inhibiting SARS-CoV-2 infection in both hPSC-LOs and hPSC-COs.

Main Results:

  • hPSC-LOs, particularly alveolar type-II-like cells, were susceptible to SARS-CoV-2 infection and induced chemokines, mimicking COVID-19 patient responses.
  • hPSC-COs, including enterocytes, expressed ACE2 and were permissive to SARS-CoV-2 infection.
  • Drug screening identified imatinib, mycophenolic acid, and quinacrine dihydrochloride as SARS-CoV-2 entry inhibitors.
  • These identified drugs significantly inhibited viral infection in both lung and colon organoids at physiological concentrations.

Conclusions:

  • hPSC-LOs and hPSC-COs provide robust, human disease-relevant models for studying SARS-CoV-2 infection.
  • These organoid models are valuable for high-throughput drug screening and identifying candidate therapeutics for COVID-19.
  • The identified entry inhibitors represent promising avenues for further investigation as COVID-19 treatments.